Rock County, WI

325 public highway bridges

Rock County Bridge Snapshot

According to the Federal Highway Administration's 2024 National Bridge Inventory, Rock County, Wisconsin contains 325 public highway bridges. Roughly 36.9% are rated “Good,” 26.8% “Fair,” and 3.4% “Poor.” Poor means the lowest applicable deck, superstructure, substructure, or culvert rating is 4 or below on the 0–9 NBI scale. It is a condition category, not a live safety or closure decision.

Responsible agencies inspect covered bridges on risk-based intervals under current NBIS rules and submit inventory data to FHWA annually. The list below shows every NBI-tracked bridge in the county. Use the “Sort by” controls to change the ordering, and click any row for its reported inspection date, traffic count, and condition fields.

Source: FHWA National Bridge Inventory. See methodology for full definitions.

325
Total Bridges
36.9%
Good
26.8%
Fair
3.4%
Poor Condition

Condition Distribution

Good
36.9% (120)
Fair
26.8% (87)
Poor
3.4% (11)

All Bridges (325)

STH 59-FULTON ST

Good

Over: SAUNDERS CREEK

0.2M E JCT USH 51, Rock, WI

Built 1968 Load: 27.5 t ADT: 5,900

LRD W. EVANSVILLE-

Good

Over: ALLEN CREEK

1.8M W JCT USH 14, Rock, WI

Built 1981 Load: 27.5 t ADT: 174

LRD RANDOLPH ST

Good

Over: SAUNDERS CREEK

0.6M N JCT STH 59, Rock, WI

Built 1992 Load: 30.8 t ADT: 1,200

USH 51

Good

Over: BR ROCK RIVER

4.1M N JCT STH 81, Rock, WI

Built 1973 Load: 32.4 t ADT: 9,700

STH 67

Good

Over: BR DRY CREEK

1.1 M W JCT CTH P, Rock, WI

Built 1978 Load: 32.4 t ADT: 1,900

USH 14-STH 11

Good

Over: BR BLACKHAWK CREEK

3.3M E JCT CTH O, Rock, WI

Built 1982 Load: 32.4 t ADT: 9,600

STH 213

Good

Over: BR RACCOON CREEK

2.0M N JCT STH 81, Rock, WI

Built 1984 Load: 32.4 t ADT: 2,600

STH 81

Good

Over: BR RACCOON CREEK

2.6M E JCT CTH K, Rock, WI

Built 1990 Load: 32.4 t ADT: 3,300

LRD VICKERMAN RD

Good

Over: OTTER CREEK

1.2M N JCT STH 59, Rock, WI

Built 1990 Load: 32.4 t ADT: 223

LRD CREEK RD

Good

Over: BR TURTLE CREEK

0.5M N JCT CTH J, Rock, WI

Built 1996 Load: 32.4 t ADT: 880

LRD TURTLE TOWNHAL

Good

Over: SPRING BROOK

0.3M S JCT CTH X, Rock, WI

Built 1999 Load: 32.4 t ADT: 622

STH 11

Good

Over: DRAINAGE

0.7M W JCT USH 51, Rock, WI

Built 2001 Load: 32.4 t ADT: 5,100

LRD WUTHERING HILL

Good

Over: SPRING BROOK CREEK

CITY OF JANESVILLE, Rock, WI

Built 1992 Load: 32.4 t ADT: 2,300

CTH M

Good

Over: BR ALLEN CREEK

0.1M N JCT STH 213, Rock, WI

Built 2009 Load: 32.4 t ADT: 1,800

CTH A

Good

Over: BR BLACKHAWK CREEK

2.5M E JCT USH 14, Rock, WI

Built 2009 Load: 32.4 t ADT: 2,900

LRD READ RD

Good

Over: BR ROCK RIVER

3.1M S JCT CTH O, Rock, WI

Built 2011 Load: 32.4 t ADT: 367

CTH J

Good

Over: TURTLE CREEK TRIBUTARY 2

0.9M E JCT CTH S, Rock, WI

Built 2011 Load: 32.4 t ADT: 625

STH 213

Good

Over: BR ALLEN CREEK

1.2M N JCT CTH A, Rock, WI

Built 2021 Load: 32.4 t ADT: 2,300

IH 39 /IH 90

Good

Over: BR ROCK RIVER

1.1M S JCT STH 11, Rock, WI

Built 2018 Load: 32.4 t ADT: 57,700

CTH MM

Good

Over: BR BLACKHAWK CREEK

1.9M E JCT USH 14, Rock, WI

Built 2017 Load: 32.4 t ADT: 600

LRD MINERAL POINT

Good

Over: FISHER CREEK

2.4M E JCT STH 184, Rock, WI

Built 2020 Load: 32.4 t ADT: 755

LRD HOPKINS ROAD

Good

Over: TRIB. TO SUGAR RIVER

0.5M S JCT BELOIT RD, Rock, WI

Built 2003 Load: 32.4 t ADT: 107

LRD NORTH TOWN LIN

Good

Over: TRIB. TO WILLOW CREEK

2.7M E. JCT CTH T, Rock, WI

Built 2003 Load: 32.4 t ADT: 107

LRD SHARON RD

Good

Over: SPRING BROOK

0.5M S JCT STH 11, Rock, WI

Built 2017 Load: 33.4 t ADT: 740

STH 81

Good

Over: TAYLOR CREEK

2.2M E JCT STH 11 TO E, Rock, WI

Built 1976 Load: 34.0 t ADT: 3,600

LRD ROCKPORT RD

Good

Over: FISHER CREEK

2.4M E JCT STH 11, Rock, WI

Built 1987 Load: 34.0 t ADT: 1,608

LRD LYONS RD

Good

Over: NORWEGIAN CREEK

0.9M S JCT CTH B, Rock, WI

Built 1994 Load: 34.0 t ADT: 16

LRD MINERAL POINT

Good

Over: STEVENS CREEK

1.3M W JCT STH 184, Rock, WI

Built 2003 Load: 34.0 t ADT: 265

LRD OLD 11 ROAD

Good

Over: BASS CREEK

1.9M N JCT STH 11, Rock, WI

Built 2003 Load: 34.0 t ADT: 265

LRD JACKSON STREET

Good

Over: ROCK RIVER

.3 MILES S JCT STH 11, Rock, WI

Built 2014 Load: 34.0 t ADT: 4,000

LRD ELM DRIVE (DEA

Good

Over: TURTLE CREEK TRIBUTARY

3.2 MILES E OF JUNCTION W, Rock, WI

Built 2022 Load: 34.3 t ADT: 100

LRD LEEDLE MILL RD

Good

Over: BADFISH CREEK

0.7M W JCT STH 138, Rock, WI

Built 2011 Load: 34.7 t ADT: 255

LRD MILWAUKEE ST

Good

Over: ROCK RIVER

0.4M E JCT STH 11, Rock, WI

Built 2020 Load: 34.7 t ADT: 6,700

CTH J

Good

Over: TURTLE CREEK

JUST NORTH OF SHOPIERE RO, Rock, WI

Built 2022 Load: 35.3 t ADT: 600

STH 81

Good

Over: EAST FORK RACCOON CREEK

2.4M E JCT CTH H, Rock, WI

Built 1990 Load: 35.6 t ADT: 3,300

LRD CREEK RD

Good

Over: CMSTPP RR

3.4M E JCT STH 140, Rock, WI

Built 2020 Load: 35.6 t ADT: 480

LRD HOPKINS RD

Good

Over: BR SUGAR RIVER

0.9M N ILLINOIS ST LINE, Rock, WI

Built 1994 Load: 35.6 t ADT: 82

LRD SNYDER RD

Good

Over: STEVENS CREEK

2.2M W JCT STH 184, Rock, WI

Built 1996 Load: 35.6 t ADT: 105

STH 59-STH 213

Good

Over: ALLEN CREEK

0.9M E JCT STH 213 TO S, Rock, WI

Built 2000 Load: 35.6 t ADT: 3,200

STH 11 EB

Good

Over: MARKHAM CR

1.5M E OF JCT HANOVER RD, Rock, WI

Built 2002 Load: 35.6 t ADT: 2,350

STH 11 WB

Good

Over: MARKHAM CR

2.0M W JCT USH 51, Rock, WI

Built 2002 Load: 35.6 t ADT: 2,350

LRD JOHNSON DR

Good

Over: N BR BASS CR OVERFLOW

3.6M N JCT STH 213, Rock, WI

Built 2003 Load: 35.6 t ADT: 275

CTH H

Good

Over: RACCOON CREEK

1.0M S JCT STH 81, Rock, WI

Built 2005 Load: 35.6 t ADT: 422

IH 39 NB / IH 90 W

Good

Over: TURTLE CREEK

0.5M W JCT CTH S TO E, Rock, WI

Built 2018 Load: 35.6 t ADT: 26,750

IH 39 SB / IH 90 E

Good

Over: WSOR

3.7M S JCT STH 59, Rock, WI

Built 2019 Load: 35.6 t ADT: 26,750

LRD POLZIN ROAD

Good

Over: MARSH CREEK

0.5 MILES SOUTH OF USH 14, Rock, WI

Built 2021 Load: 35.6 t ADT: 112

STH 26 NB

Good

Over: OTTER CREEK

3.5 MI. N STH 59, Rock, WI

Built 2013 Load: 36.0 t ADT: 13,900

STH 26SB

Good

Over: OTTER CREEK

0.2 MI. S OF CTH N, Rock, WI

Built 2013 Load: 36.0 t ADT: 13,900

LRD CARVERS ROCK R

Good

Over: TURTLE CREEK

4.0M S JCT USH 14, Rock, WI

Built 2017 Load: 36.3 t ADT: 231

CTH G

Good

Over: WATERWAY

7 M N JCT STH 81, Rock, WI

Built 2015 Load: 36.3 t ADT: 9,000

Read our methodology - how this data is sourced, computed, and verified.

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Data sourced from official public datasets. See our methodology for details. Retrieved and formatted by PlainBridges

Every figure on PlainBridge is rendered directly from federal source data, no number is typed in by an editor. This page draws directly on federal source data, no figure is typed in by an editor. See our editorial standards & corrections policy, the methodology behind these numbers, or report a data error.